2007 Audi A4 vs. 1978 BMW 520
To start off, 2007 Audi A4 is newer by 29 year(s). Which means there will be less support and parts availability for 1978 BMW 520. In addition, the cost of maintenance, including insurance, on 1978 BMW 520 would be higher. At 3,123 cc, 2007 Audi A4 is equipped with a bigger engine. In terms of performance, 2007 Audi A4 (252 HP @ 5100 RPM) has 117 more horse power than 1978 BMW 520. (135 HP @ 4000 RPM). In normal driving conditions, 2007 Audi A4 should accelerate faster than 1978 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A4 weights approximately 28 kg more than 1978 BMW 520. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2007 Audi A4 (330 Nm @ 3250 RPM) has 50 more torque (in Nm) than 1978 BMW 520. (280 Nm @ 1750 RPM). This means 2007 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1978 BMW 520.
Compare all specifications:
| 2007 Audi A4 | 1978 BMW 520 | |
| Make | Audi | BMW |
| Model | A4 | 520 |
| Year Released | 2007 | 1978 |
| Body Type | Convertible | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3123 cc | 1951 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 252 HP | 135 HP |
| Engine RPM | 5100 RPM | 4000 RPM |
| Torque | 330 Nm | 280 Nm |
| Torque RPM | 3250 RPM | 1750 RPM |
| Engine Bore Size | 84.5 mm | 84 mm |
| Engine Stroke Size | 92.8 mm | 88 mm |
| Engine Compression Ratio | 12.5:1 | 19.0:1 |
| Top Speed | 250 km/hour | 204 km/hour |
| Acceleration 0-100mph | 6.8 seconds | 10.9 seconds |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1698 kg | 1670 kg |
| Vehicle Length | 4580 mm | 4810 mm |
| Vehicle Width | 1400 mm | 1810 mm |
| Vehicle Height | 1780 mm | 1450 mm |
| Wheelbase Size | 2660 mm | 2770 mm |
| Fuel Consumption Overall | 11 L/100km | 6.1 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
